The other day I got my car (2011 Infiniti G37X AWD coupe) stuck in the snow. As I was in the process of getting it unstuck the AWD light started flashing. I got it unstuck and finally got on the road, and I ended up having to pull over because the car was in limp mode and I had to get it out to get to my destination. After getting it out of limp mode, I've noticed that my car still isn't at full power because it took way longer than usual to get up to speed when getting on the interstate. Any suggestions on what the problem could be?